**Lever Operated NBR Seat Cast Iron Lug Butterfly Valve**
**Basic Information:**
- **Model No.:** DN50-DN1200
- **Connection Form:** Wafer
- **Seal Form:** Force Sealed
- **Working Pressure:** Mid-Pressure (2.5MPa < Pn < 6.4MPa)
- **Material of Seal Surface:** Soft Sealed
- **Application:** Industrial Use, Water Treatment, Household Applications
- **Body Flange Drilling:** ISO7005-2; EN1092
- **Color:** Blue or Custom Options
- **Transport Packaging:** Seaworthy Packing
- **Origin:** Tianjin, China
**Additional Specifications:**
- **Driving Mode:** Manual
- **Structure:** Center Sealing
- **Valve Stem:** Standard
- **Working Temperature:** Medium Temperature (120°C < T < 450°C)
- **Valve Body:** Cast Iron
- **Face to Face:** ISO5752, EN558-1
- **Medium:** Water, Steam, Oil
- **Trademark:** GHL
- **Specification:** ASTM, ANSI, API, DIN, JIS
- **HS Code:** 8481804090
**Features:**
1. Compact and lightweight design, easy to install and maintain. It can be installed in various locations.
2. Simple and compact structure with quick 90° on-off operation.
3. The disc has two-way bearings for a perfect seal, ensuring no leakage during pressure testing.
4. Flow curve tends toward a straight line, offering excellent regulation performance.
5. Available in various materials, suitable for different media types.
6. Strong resistance to washing and brushing, ideal for harsh working conditions.
7. Center plate design reduces the torque required for opening and closing.
8. Long service life, capable of withstanding tens of thousands of operations.
9. Suitable for both shut-off and flow regulation of media.
**Technical Parameters Table:**
| Size | DN50mm – DN1400mm |
|------------------|--------------------|
| Design Standard | API 609 / EN 593 |
| End Flange | DIN PN10/PN16, BS4504 PN10/PN16, ANSI Class 125#/Class 150# |
| Face to Face | ISO 5752 |
| Top Flange | ISO 5211 |
| Body | Ductile Iron / CF8 / CF8M / WCB |
| Disc | Ductile Iron / CF8 / CF8M / C95400 / C95500 |
| Stem | SS420 / SS431 / SS316 |
| Seat | EPDM / NBR / VITON |
| Actuator | Bare Shaft / Lever / Gearbox & Handwheel / Pneumatic / Electric |
| Coating | Epoxy / Nylon / PTFE |
| Pin | Monel / SS416 / SS431 |
| Suitable Medium | Water / Seawater / Sewage / Air / Foodstuff / Oil |
This lever-operated butterfly valve is designed for durability, efficiency, and versatility across a wide range of industrial applications. Its robust construction and reliable sealing mechanism make it an ideal choice for water treatment, oil, and gas systems. Whether used in commercial or residential settings, this valve ensures smooth and consistent performance. The availability of multiple materials and standards makes it adaptable to various environments and requirements.
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